feat: Probably functional

app/db.py

@@ -1,9 +1,11 @@
+from pathlib import Path
+
 from flask import Flask
 from sqlalchemy import create_engine
-from sqlalchemy.orm import DeclarativeBase, scoped_session, sessionmaker
+from sqlalchemy.orm import DeclarativeBase, Session, scoped_session, sessionmaker
 
 engine = None
-SessionLocal = None
+SessionLocal: scoped_session[Session]
 
 
 class Base(DeclarativeBase):
@@ -13,8 +15,13 @@ class Base(DeclarativeBase):
 def init_db(app: Flask) -> None:  # noqa: ARG001
     global engine, SessionLocal  # noqa: PLW0603
 
+    Path("./instance").mkdir(exist_ok=True)
+
     engine = create_engine("sqlite:///instance/app.db", echo=True, future=True)
-    SessionLocal = scoped_session(sessionmaker(bind=engine))
+    session_local = scoped_session(sessionmaker(bind=engine))
+    if session_local is None:
+        raise RuntimeError
+    SessionLocal = session_local
 
     from . import models  # noqa: F401, PLC0415
 

app/models.py

@@ -6,14 +6,6 @@ from sqlalchemy.orm import Mapped, mapped_column
 from .db import Base
 
 
-class User(Base):
-    __tablename__ = "users"
-
-    id: Mapped[int] = mapped_column(Integer, primary_key=True)
-    name: Mapped[str] = mapped_column(String)
-    contact: Mapped[int] = mapped_column(Integer, nullable=True)
-
-
 class Drink(Base):
     __tablename__ = "drinks"
 
@@ -21,7 +13,7 @@ class Drink(Base):
     name: Mapped[str] = mapped_column(String)
     price: Mapped[int] = mapped_column(Integer)
     stock: Mapped[int] = mapped_column(Integer)
-    stocked_by: Mapped[int] = mapped_column(Integer, ForeignKey(User.id))
+    stocked_by: Mapped[str] = mapped_column(String)
 
 
 # Buys
@@ -30,6 +22,6 @@ class Transaction(Base):
 
     id: Mapped[int] = mapped_column(Integer, primary_key=True)
     drink: Mapped[int] = mapped_column(Integer, ForeignKey(Drink.id))
-    user: Mapped[int] = mapped_column(Integer, ForeignKey(User.id))
+    user_name: Mapped[str] = mapped_column(String)
     quantity: Mapped[int] = mapped_column(Integer)
     timestamp: Mapped[datetime] = mapped_column(DateTime)

app/routes.py

@@ -1,8 +1,195 @@
-from flask import Blueprint, render_template
+from datetime import datetime
+
+from flask import Blueprint, redirect, render_template, request, url_for
+from sqlalchemy import distinct, select
+from werkzeug.wrappers.response import Response
+
+from app.db import SessionLocal
+from app.models import Drink, Transaction
 
 bp = Blueprint("main", __name__)
 
 
-@bp.route("/")
+@bp.get("/")
 def index() -> str:
     return render_template("index.html")
+
+
+@bp.get("/add")
+def create_drink_get() -> str:
+    return render_template("add.html")
+
+
+@bp.post("/add")
+def create_drink_post() -> Response | tuple[str, int]:
+    name = request.form.get("name")
+    stock_raw = request.form.get("stock")
+    price_raw = request.form.get("price")
+    contact = request.form.get("phone_number")
+
+    if name is None or stock_raw is None or price_raw is None or contact is None:
+        return "Missing required fields", 400
+
+    name = name.strip()
+    contact = contact.strip()
+
+    try:
+        stock = int(stock_raw)
+        price = float(price_raw)
+    except ValueError:
+        return "Invalid numeric input", 400
+
+    if stock <= 0 or price <= 0:
+        return "Invalid stock or price", 400
+
+    session = SessionLocal()
+
+    drink = Drink(name=name, stock=stock, price=price, stocked_by=contact)
+
+    session.add(drink)
+    session.commit()
+
+    return redirect(url_for("main.list_drinks_get", id=drink.id))
+
+
+@bp.get("/drink/<id>/manage")
+def manage_drink_get(id: int) -> str | tuple[str, int]:  # noqa: A002
+    session = SessionLocal()
+
+    drink = session.get(Drink, id)
+    if drink is None:
+        return "Drink not found", 404
+
+    return render_template("drink_manage.html", drink=drink)
+
+
+@bp.post("/drink/<id>/restock")
+def restock_drink_post(id: int) -> Response | tuple[str, int]:  # noqa: A002
+    session = SessionLocal()
+
+    drink = session.get(Drink, id)
+    if drink is None:
+        return "Drink not found", 404
+
+    amount_raw = request.form.get("amount")
+
+    if amount_raw is None:
+        return "Missing fields", 400
+
+    try:
+        amount = int(amount_raw)
+    except ValueError:
+        return "Non numeric amount", 400
+
+    if amount <= 0:
+        return "Invalid amount", 400
+
+    drink.stock += amount
+    session.commit()
+
+    return redirect(url_for("main.manage_drink_get", id=id))
+
+
+@bp.post("/drink/<id>/delete")
+def delete_drink_post(id: int) -> Response | tuple[str, int]:  # noqa: A002
+    session = SessionLocal()
+
+    drink = session.get(Drink, id)
+    if drink is None:
+        return "Drink not found", 404
+
+    session.delete(drink)
+    session.commit()
+
+    return redirect(url_for("main.list_drinks_get"))
+
+
+@bp.get("/drinks")
+def list_drinks_get() -> str:
+    session = SessionLocal()
+
+    stmt = select(Drink)
+    result = session.execute(stmt)
+    drinks = [row[0] for row in result if row[0]]
+
+    return render_template("drink_list.html", drinks=drinks)
+
+
+@bp.get("/drink/<id>")
+def buy_drink_get(id: int) -> str | tuple[str, int]:  # noqa: A002
+    session = SessionLocal()
+
+    drink = session.get(Drink, id)
+    if drink is None:
+        return "Drink not found", 404
+
+    # Find user names
+    stmt = select(distinct(Transaction.user_name)).order_by(Transaction.user_name)
+    result = session.execute(stmt).all()
+    names = [row[0] for row in result if row[0]]
+
+    return render_template("drink_buy.html", drink=drink, names=names)
+
+
+@bp.post("/drink/<id>/buy")
+def buy_drink_post(id: int) -> Response | tuple[str, int]:  # noqa: A002
+    session = SessionLocal()
+
+    drink = session.get(Drink, id)
+    if drink is None:
+        return "Drink not found", 404
+
+    name = request.form.get("name")
+    qty_raw = request.form.get("quantity")
+
+    if name is None or qty_raw is None:
+        return "Missing fields", 400
+
+    name = name.strip()
+
+    try:
+        quantity = int(qty_raw)
+    except ValueError:
+        return "Invalid quantity", 400
+
+    if quantity <= 0:
+        return "Quantity must be positive", 400
+
+    if drink.stock < quantity:
+        return "Not enough stock", 400
+
+    # Update stock
+    drink.stock -= quantity
+
+    # Create transaction
+    transaction = Transaction(drink=drink.id, user_name=name, quantity=quantity, timestamp=datetime.now().astimezone())
+
+    session.add(transaction)
+    session.commit()
+
+    return redirect(url_for("main.list_drinks_get", id=id))
+
+
+@bp.get("/transactions")
+def list_transactions_get() -> str:
+    session = SessionLocal()
+
+    stmt = select(Transaction).order_by(Transaction.timestamp)
+    result = session.execute(stmt).all()
+    txs: list[Transaction] = [row[0] for row in result if row[0]]
+
+    stmt = select(Drink)
+    result = session.execute(stmt).all()
+    drinks: dict[int, Drink] = {row[0].id: row[0] for row in result if row[0]}
+
+    patched = [
+        {
+            "drink_name": drinks[t.drink].name if t.drink in drinks else "<removed drink>",
+            "user_name": t.user_name,
+            "quantity": t.quantity,
+            "timestamp": t.timestamp,
+        }
+        for t in txs
+    ]
+
+    return render_template("transactions.html", transactions=patched)

app/static/style.css

@@ -0,0 +1,164 @@
+/* Base reset */
+* {
+    box-sizing: border-box;
+    margin: 0;
+    padding: 0;
+}
+
+/* Theme */
+body {
+    font-family: system-ui, -apple-system, sans-serif;
+    background-color: #0f1115;
+    color: #e6e6e6;
+    line-height: 1.5;
+    padding: 16px;
+}
+
+/* Layout container */
+.container {
+    max-width: 600px;
+    margin: 0 auto;
+}
+
+/* Headings */
+h1, h2, h3 {
+    margin-bottom: 12px;
+    font-weight: 600;
+}
+
+/* Text spacing */
+p {
+    margin-bottom: 10px;
+}
+
+/* Links */
+a {
+    color: #6ab0ff;
+    text-decoration: none;
+}
+
+a:hover {
+    text-decoration: underline;
+}
+
+/* Cards (main building block) */
+.card {
+    background: #171923;
+    border-radius: 10px;
+    padding: 14px;
+    margin-bottom: 12px;
+    border: 1px solid #222633;
+}
+
+/* Table (mobile-friendly fallback) */
+.table {
+    width: 100%;
+    border-collapse: collapse;
+    margin-top: 10px;
+}
+
+.table th,
+.table td {
+    padding: 10px;
+    text-align: left;
+    border-bottom: 1px solid #2a2f3a;
+}
+
+.table th {
+    font-size: 0.9em;
+    color: #a0a7b5;
+}
+
+/* Form elements */
+.form-group {
+    margin-bottom: 14px;
+}
+
+label {
+    display: block;
+    margin-bottom: 6px;
+    font-size: 0.9em;
+    color: #a0a7b5;
+}
+
+/* Inputs */
+input {
+    width: 100%;
+    padding: 10px;
+    border-radius: 8px;
+    border: 1px solid #2a2f3a;
+    background: #0f1115;
+    color: #e6e6e6;
+    font-size: 1em;
+}
+
+/* Buttons */
+.button {
+    display: inline-block;
+    margin: 3px;
+    width: 100%;
+    padding: 12px;
+    border-radius: 8px;
+    border: none;
+    background: #2f81f7;
+    color: white;
+    font-size: 1em;
+    font-weight: 500;
+    text-align: center;
+    cursor: pointer;
+}
+
+.button:hover {
+    background: #1f6feb;
+}
+
+/* Secondary button */
+.button-secondary {
+    background: #30363d;
+}
+
+.button-secondary:hover {
+    background: #3a4048;
+}
+
+/* Danger button */
+.button-danger {
+    background: #da3633;
+}
+
+.button-danger:hover {
+    background: #b62324;
+}
+
+/* Inline actions */
+.actions {
+    display: flex;
+    gap: 10px;
+    margin-top: 10px;
+}
+
+/* Small text */
+.muted {
+    color: #8b949e;
+    font-size: 0.85em;
+}
+
+/* Spacing helpers */
+.mt {
+    margin-top: 12px;
+}
+
+.mb {
+    margin-bottom: 12px;
+}
+
+/* Divider */
+.divider {
+    height: 1px;
+    background: #2a2f3a;
+    margin: 16px 0;
+}
+
+button:active {
+    transform: scale(0.98);
+}

app/templates/add.html

@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Add Drink</title>
+    <link rel="stylesheet" href="{{ url_for('static', filename='style.css') }}">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+</head>
+<body>
+<div class="container">
+    <h1>Add Drink</h1>
+
+    <form method="POST" action="/add">
+        <div class="form-group">
+            <label>Drink name</label>
+            <input type="text" name="name" required>
+        </div>
+
+        <div class="form-group">
+            <label>Quantity</label>
+            <input type="number" name="stock" min="1" required>
+        </div>
+
+        <div class="form-group">
+            <label>Price (€):</label>
+            <input type="number" step="0.01" name="price" required>
+        </div>
+
+        <div class="form-group">
+            <label>Name + Phone number</label>
+            <input type="text" name="phone_number" placeholder="Name +351..." required>
+        </div>
+
+        <button class="button" type="submit">Create drink</button>
+    </form>
+
+    <br>
+    <a href="/">Back</a>
+</div>
+</body>
+</html>

app/templates/drink_buy.html

@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>{{ drink.name }}</title>
+    <link rel="stylesheet" href="{{ url_for('static', filename='style.css') }}">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+</head>
+<body>
+<div class="container">
+    <div class="card">
+        <h1>{{ drink.name }}</h1>
+        <p><strong>{{ "%.2f"|format(drink.price) }}€</strong></p>
+        <p class="muted">Stock: {{ drink.stock }}</p>
+        <p><strong>Pay to:</strong> {{ drink.phone_number }}</p>
+    </div>
+
+    {% if drink.stock > 0 %}
+        <div class="card">
+            <form method="POST" action="/drink/{{ drink.id }}/buy">
+                <label>
+                    Your name:
+                    <input list="names" name="name" required>
+                </label>
+
+                <datalist id="names">
+                    {% for n in names %}
+                        <option value="{{ n[0] }}"></option>
+                    {% endfor %}
+                </datalist>
+
+                <label>
+                    Quantity:
+                    <input type="number" name="quantity" value="1" min="1" required>
+                </label>
+
+                <button class="button" type="submit">Take drink</button>
+            </form>
+        </div>
+    {% else %}
+        <p><strong>Out of stock</strong></p>
+    {% endif %}
+
+    <a class="button" href="/drinks">Back to list</a>
+</div>
+</body>
+</html>

app/templates/drink_list.html

@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Drinks Catalogue</title>
+    <link rel="stylesheet" href="{{ url_for('static', filename='style.css') }}">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+</head>
+<body>
+<div class="container">
+    <h1>Drinks Catalogue</h1>
+
+    {% if drinks %}
+        {% for drink in drinks %}
+            <div class="card">
+                <strong>{{ drink.name }}</strong>
+                <p class="muted">{{ "%.2f"|format(drink.price) }}€</p>
+                <p>Stock: {{ drink.stock }}</p>
+
+                <div class="actions">
+                    <a class="button" href="/drink/{{ drink.id }}">Buy</a>
+                    <a class="button button-secondary" href="/drink/{{ drink.id }}/manage">Manage</a>
+                </div>
+            </div>
+        {% endfor %}
+    {% else %}
+        <p>No drinks available.</p>
+    {% endif %}
+    <a href="/">Back</a>
+</div>
+</body>
+</html>

app/templates/drink_manage.html

@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Manage Drink</title>
+    <link rel="stylesheet" href="{{ url_for('static', filename='style.css') }}">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+</head>
+<body>
+<div class="container">
+    <h1>Manage Drink</h1>
+
+    <div class="card">
+        <h2>{{ drink.name }}</h2>
+        <p>Price: {{ drink.price }}€</p>
+        <p>Stock: {{ drink.stock }}</p>
+    </div>
+
+    <div class="card">
+        <h3>Restock</h3>
+        <form method="POST" action="/drink/{{ drink.id }}/restock">
+            <label>
+                Add quantity:
+                <input type="number" name="amount" min="1" required>
+            </label>
+            <button class="button" type="submit">Increase stock</button>
+        </form>
+    </div>
+
+    <div class="card">
+        <h3>Danger zone</h3>
+        <form method="POST" action="/drink/{{ drink.id }}/delete" onsubmit="return confirm('Delete this drink?');">
+            <button class="button" type="submit" style="background: red;">Delete drink</button>
+        </form>
+    </div>
+
+    <a class="button" href="/drinks">Back to list</a>
+</div>
+</body>
+</html>

app/templates/index.html

@@ -2,9 +2,16 @@
 <html>
 <head>
     <title>Fridge Tracker</title>
+    <link rel="stylesheet" href="{{ url_for('static', filename='style.css') }}">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
 </head>
 <body>
+<div class="container">
     <h1>Fridge Tracker</h1>
     <p>Welcome. System is running.</p>
+    <a class="button" href="/add">Add drink</a>
+    <a class="button" href="/drinks">Drink catalogue</a>
+    <a class="button" href="/transactions">Transactions</a>
+</div>
 </body>
 </html>

app/templates/transactions.html

@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Transactions</title>
+    <link rel="stylesheet" href="{{ url_for('static', filename='style.css') }}">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+</head>
+<body>
+<div class="container">
+
+    <h1 class="mb">Transactions</h1>
+
+    <div class="card">
+
+        {% if transactions %}
+            <table class="table">
+                <thead>
+                    <tr>
+                        <th>Drink</th>
+                        <th>User</th>
+                        <th>Qty</th>
+                        <th>Time</th>
+                    </tr>
+                </thead>
+                <tbody>
+                    {% for t in transactions %}
+                        <tr>
+                            <td>{{ t.drink_name }}</td>
+                            <td>{{ t.user_name }}</td>
+                            <td>{{ t.quantity }}</td>
+                            <td class="muted">
+                                {{ t.timestamp.strftime("%Y-%m-%d %H:%M") }}
+                            </td>
+                        </tr>
+                    {% endfor %}
+                </tbody>
+            </table>
+        {% else %}
+            <p>No transactions yet.</p>
+        {% endif %}
+
+    </div>
+
+    <div class="mt">
+        <a class="button button-secondary" href="/">Back</a>
+    </div>
+
+</div>
+</body>
+</html>